.new-button {
  margin-bottom: 0;
  position: sticky;
  top: 0;
  margin-top: 0;
  z-index: 999;
}

.courses-list {
  max-height: calc(80vh);
  overflow: scroll;
}

.no-cheak {
  position: relative;
  width: 100%;
  height: 800rpx;

  .no-cheak-tips {
    position: absolute;
    left: 50%;
    top: 50%;
    color: gray;
  }

  .no-cheak-tips-icon {
    transform: translate(-50%, -110%);
  }

  .no-cheak-tips-1 {
    transform: translate(-50%, -50%);
  }

  .no-cheak-tips-2 {
    transform: translate(-50%, 60%);
  }
}